File locking mechanism

ABSTRACT

When the lock is pushed-in, a cam which moves with the lock, causes a vertical lock rod, on which catches are mounted, to be cammed down and a spring to be loaded. Catches on the lock rod then fall in front of drawer stops of closed drawers, to lock said drawers. When the lock of the file cabinet is unlocked with a key, it is projected forwardly and the loaded spring then raises the lock rod to cause the catches to clear the draw stops, to unlock the drawers and allow them to be pulled to open positions. If the projected lock is pushed-in while the drawer is open, and the open drawer is thereafter shut, the drawer will be automatically locked, because a cam on a catch of the lock rod, is engaged by the drawer stop of the pushed-in drawer, to cause the lock rod to be moved down, and allow the drawer to be fully closed. When the drawer stop clears the cam on a catch, the lock rod is snapped up by the loaded spring to bring the catch in front of the retracted drawer stop, to lock the drawer in closed condition.

United States Patent [191 Chovanec et al.

[451 Nov. 27, 1973 FILE LOCKING MECHANISM [75] Inventors: WilliamChovanec, Montvale; Peter Heck, Teaneck, both of NJ. [73] Assignee: ArtSteel Company, Inc., Bronx,

[22] Filed: Nov. 3, 1971 [21] Appl. No.: 195,103

[52] 11.8. C1. 312/217 [51] Int. Cl. E051) 65/46, E050 15/04 [58] Fieldof Search.....' 312/216, 217, 218, 312/219; 70/361, 360, 70, 8

[56] References Cited UNITED STATES PATENTS 1,574,712 2/1926 Stone312/219 UX 1,193,955 8/1916 Watson et al. 1,806,643 5/1931 Ohnstrand312/217 2,743,149 4/1956 Abrahamson et a1 312/219 3,238,003 3/1966 Stark312/219 3,325,234 6/1967 Lewin 312/219 Primary Examiner-Paul R. GilliamAttorney-J. B. Felshin [57] ABSTRACT When the lock is pushed-in, a camwhich moves with the lock, causes a vertical lock rod, on which catchesare mounted, to be cammed down and a spring to be loaded. Catches on thelock rod then fall in front of drawer stops of closed drawers, to locksaid drawers. When the lock of the file cabinet is unlocked with a key,it is projected forwardly and the loaded spring then raises the lock rodto cause the catches to clear the draw stops, to unlock the drawers andallow them to be pulled to open positions. If the projected lock ispushed-in while the drawer is open, and the open drawer is thereaftershut, the drawer will be automatically locked, because a cam on a catchof the lock rod, is engaged by the drawer stop of the pushed-in drawer,to cause the lock rod to be moved down, and allow the drawer to be fullyclosed. When the drawer stop clears the cam on a catch, the lock rod issnapped up by the loaded spring to bring the catch in front of theretracted drawer stop, to lock the drawer in closed condition.

PAIENIEDxuv 27 I913 SHEET 2 BF 3 FIGS INVENTOR5 LIAM Chow/v50 7E? IVECApushed-in and in locked condition, after the FILE LOCKING MECHANISM Anobject of this invention is to generally improve earlier drawer fileconstructions which allow one to shut a drawer of a file cabinet whilethe file lock is pushed-in and in locked condition, and automaticallylock the pushed-in drawer. I

Another object of this invention is to provide file lock construction ofthe character described which is selfcontained and can be installed inthe field on non-lock file cabinets, without any additional weldedbrackets.

Still another object of this invention is to provide locking means fordrawer file cabinets having highly improved interlocking means,including a slider movable with the lock housing and having a groove tore ceive part of a plate fixed to a wall of the cabinet, which plate hasa groove to receive a wall of the slider, and said slider having a camto move a vertical lock rod slidably mounted onthe cabinet and carryingcatches which cooperate with drawer stops to lock the drawers.

Yet another object of this invention is to provide in a drawer filecabinet of the character described, catches which assemble easily withthe lock rod, after the lock rod is in place, by means of plastic pinswhich do not take the pressure of camming action of cam means on thecatches, the pressure being on the lock rod itself and not on theplastic pins.

A further object of this invention is to provide in .a drawer fileconstruction of the character described, a lock rod controlled by thelock, and catches on the lock rod, which act as locking means for thedrawer, because the catches are in front of the drawer stops when thelock is in locked condition, and further provided with cam means tocause the lock rod to move down, if the drawer is shut while the lock isin pu'shed-in locked position until the drawer stop clears the catch, toallow a spring to raise the lock rod to bring the catch again intolocking position in front of the drawer stop,

and to hence automatically lock the drawer in closed position if it isclosed while the lock is in said pushed-in, locked condition.

Still a further object of this invention is toprovide a smoothlyoperating and positive file drawer lock mechanism of the characterdescribed comprising a support plate fixed to the cabinet, a 'lockhousing slidably mounted on said plate for movement between a retracted,pushed-inor locked position, and a projected unlocked position, a sliderassembled with said lock housing for reciprocatory movement therewith,with spring means to project said lock housing when it is unlocked, andwith cam means on said slider to depress a lock rod which carriescatches to lock the drawers in closed position.

Yet a further object of this invention is to provide in when said lockis unlocked and projected, and to raise said lock rod after it has beendepressed by engagement of the drawer stop with a cam on a catch mountedon the lock rod, when a drawer is shut while the lock is drawer stopclears the catch cam.

Another object of this inventionis to provide in a drawerfileconstruction of the character described, improved means to guide thelock rod for vertical movement relative to the cabinet.

A still further object of this invention is to provide a strong anddurable drawer file construction of the character described which shallbe relatively inexpensive to manufacture, easy to assembly and whichshall yet be practical and efficient to a high degree in use.

Other objects of this invention will in part be obvious and in parthereinafter pointed out.

The invention accordingly consists in the features of construction,combinations of elements, and arrangement of parts, which will beexemplified in the construction hereinafter described, and of which thescope of invention will be indicated in the following claims.

In the accompanying drawings in which is shown various illustrativeembodiments of this invention,

FIG. 1 is cross-sectional view taken just below the top wall of a drawercabinet, looking down, which cabinet is provided with locking means andembodying the invention;

FIG. 2 is a cross-sectional view taken on line 2-2 of FIG. 1;

FIG. 3 is a cross-sectional view taken on line 3-3 of FIG. 2;

FIG. 4 is a cross-sectional view taken on line 4-4 of FIG. 1;

FIG. 5 is a cross-sectional view taken on line 5-5 of FIG. 3;

FIG. 6 is a partial perspective view illustrating the case track andmeans to guide the lock rod for vertical sliding movement;

FIG. 7.is a cross-sectional view taken on line 7-7 of FIG. 6;

FIG. 8 is a horizontal partial cross-sectional view showing how a casetrack is fixed to a side wall of the cabinet; and

FIG. 9 is an exploded perspective view of a catch and portion of thelock rod to which it is attached.

Referring now in detail to the drawing, 10 designates a drawer filecabinet comprising a housing 11 in which one or more drawers 12 areslidably mounted.

The housing or casing 11 is made of sheet metal and comprises a rearwall 13 and side walls 14 from the front end of each of which thereextends a front web 15 provided: with a rearwardly extending flange l6.Welded to each side wall 14,at the front of the casing, is a frontvertical post 17 comprising a flange 17a contacting the inside of web15. Extending from flange 17a is a web 17b contacting flange 16 anddisposed parallel to wall 14. Extending from web 17b is a wall 17cparallel to flange 17a. Extending from wall 17c is a flange 17dcontacting the inside surface of wall 14.

In FIG. 1, only one side wall 14is shown, it being understood that theopposite side wall 14 is similar and symmetrically disposed relativethereto.

Welded to the inside of each of the side walls 14 are welded verticalintermediate posts 20 and vertical rear posts 21. Posts 20 and 21 aswell as posts 17 are of usual, well known construction. Welded to theposts 17, 20, 21 at the insides of the side walls 14 of the cabinet, areparallel, horizontal aligned pairs of case tracks 22, there being onepair for each. drawer 12 for supporting the drawer for opening andclosing movement in the well known manner.

Each case track 22 has an outer web 22a in a vertical plane. Extendingfrom the upper end of wall 22a is a horizontal wall 22b extendinginwardly (away from wall 14). Extending downwardly from wall 22b is aflange 22c. Extending from the lower side of web 22a is a horizontalwall 22d parallel to wall 22b, and extending upwardly from wall 22d is aflange 22e in the plane of flange 22c.

Housing 11 has a top wall 25 provided at the front, with a downwardlyextending wall 26 formed with a rearwardly extending horizontal flange27. Welded to the top of flange 27 is a plate support 28 having a lowerflange 28a contacting thetop of flange 27. Extending upwardly from wall28a is a vertical web 28b, from which a horizontal wall 28c extendsrearwardly. At the rear end of wall 280 is a downwardly extending rib orflange 28d.

The drawer 12 has a double front wall 29 to which a handle 30 is fixed.Drawer 12 has a side wall 31 of usual construction provided with adrawer stop 32. Drawer stop 32 has a vertical flange 32a welded to theoutside of wall 31. Extending from the lower end of flange 32a is ahorizontal flange 32b which projects sideways, toward side wall 14 andis located just above the associated case track 22. Thus, there is adrawer stop for a case track 22 at each level.

Screwed to the top of wall 280 of member 28 by means of screws 35, is abracket 36 comprising a flat horizontal wall 37 having a front edge 37a,an inner edge 37b, a rear edge 370, an inclined edge 37d interconnectingedges 37b and 370, and an outer edge 37e. Extending upwardly from wall37 is a web 38 spaced from and parallel to rear edge 37e. Extending fromweb 38 is a horizontal flange 39. Cut from the wall 37 is a flange orkeeper 40 which projects upwardly in spaced parallel relation to web 38and disposed between the ends of said web. Also cut from wall 37 is anupstanding flange 41 disposed in a plane perpendicular to flange 40 andbetween the planes of flange 40 and web 38, and spaced rearwardly of web38. Flange 41 is formed with a transverse, centrally located slot 41afor the purpose hereinafter appearing.

Wall 37 is formed, at its edge 37e and near its rear edge 370, with anotch 42 having an edge 42a parallel to edge 37e and from the ends ofwhich extend edges 42b, 42c leading to edge 37e. Extending from edge 420is a narrow slot 43 parallel to edge 37e.

Slidably mounted on said member 36 is a slider or cam member 50. Saidmember 50 comprises a top wall 51 of rectangular shape disposed abovewall 37. Extending downwardly from the outer side of top wall 51 is aflange 52 formed with a slot 53 receiving part of wall 37. Part offlange 52 is received in slot 43.

Extending forwardly from the forward end of top wall 51 is a horizontaltongue or rod 55 which passes through slot 41a and passes beneath topflange 39.

Slidably mounted between wall 37 and flange 39, and between the web 38and flange 40 is a cylinder barrel lockhousing 56 formed at its rear endwith a slot 57 receiving the forward end of tongue 55. Said tongue isattached to lock housing 56 by means of a screw 58 passing throughregistering openings in said tongue and housing. A coil compressionspring 59 surrounds tongue 55 and is interposed between flange 41 andthe rear end of lock housing 56 to bias the housing and slider 50forwardly.

In housing 56 is a cylinder barrel 60 controlled by a key 61, which isinserted in a key opening in the barrel 60. When the housing 56 is inthe outward, projected or unlocked position of FIGS. 1 and 3, a bolt orlatch 62 held in retracted position by the flange 40 and spring 59retains said housing in projected position.

When the housing 56 is pushed rearwardly, sufficiently for the bolt 62to clear the rear edge of flange 40, said bolt will spring out andengage said flange to retain the housing 56 in retracted, pushed-incondition.

When the housing 56 is in pushed-in condition, the closed drawers arelocked by mechanism to be described hereinafter. When a key is insertedinto the barrel, andturned, the bolt 62 is retracted to permit thespring 59 to project the housing 56. Means is provided as will beexplained hereinafter, to release the drawers for opening movement whenthe lock housing is projected. Means is also provided, as will beexplained, to automatically lock any drawer which is shut while the lockhousing is in pushed-in condition.

To this end, flange 52 at its rear end has a downwardly and forwardlyinclined camming under edge 65. When the lock housing is in projectedposition, cam edge 65 crosses the wall 37 substantially at the edge 420of notch 42, so that the upper part of said cam edge is disposedrearwardly of said edge 42c and above wall 37 and notch 42, and thelower part of said cam edge is disposed forwardly of said edge 42c andbelow wall 37. When said lock housing 56 is pushed rearwardly, slider 50moves rearwardly therewith to the dot-dash position of FIG. 3 where thelower end of cam edge 65 is disposed somewhat rearwardly of edge 420 ofnotch 42, for the purpose hereinafter appearing.

Slidably mounted in the cabinet for vertical reciprocation in the spacebetween the case tracks 22 on the right side of the cabinet and theright side wall 14 of the cabinet casing, is an elongated lock rod offlat bar stock. Lock rod 70 comprises an elongated bar 70a of uniformwidth contacting the outer surfaces of the webs'22a of the case tracks22. A vertical plane perpendicular to bar 70a and equally spaced fromthe side edges 70b of said bar, passes through the notch 42 and isequally spaced from the notch edges 42b, 42c. The lock rod 70 is hencelocated between the posts 17 and 20. The lock rod 70 crosses each of thecase tracks 22 and is guided for up and down vertical movement byoutwardly embossed angle-shaped guides 71 cut from the metal of webs22a, of the case tracks.

Extending-up from the upper end of bar 70a is a bar portion 700 narrowerin width relative to bar 70a and centered with respect thereto.Extending outwardly from the upper end of bar portion 70c, towardadjacent side wall 14 is a horizontal bar portion 70d, from which an endbar portion 70e extends upwardly through the notch 42, and against theouter side of flange 52 of slider 50.

A coil tension spring 74 is connected at its lower end to bar portion70c, and at its upper end to wall 37, to bias the lock bar 70 upwardly.When the lock 56 is unlocked and projects forwardly (under influence ofspring 59), as shown in full lines in FIGS. 1 and 3, bar portion 70c'ispressed up against the underside of wall 37 under the influence ofspring 74.

As the lock housing 56 is pushed-inv to locking position, the slider 50is moved rearwardly from the full line position of FIGS. 1 and 3 to thedot-dash line position of said figures. During such movement, cam edge65 moving to the left, as shown in FIG. 3, depresses the lock rod 70 forthe purpose hereinafter appearing.

The bar 70a of lock rod 70 is formed at each drawer stop 32 level, witha lower slot and an upper slot 81 both extending to the rear edge 70b ofthe bar (see FIG.

9). Slot 80 has a depressed edge; 80a and slot 81 has a depressed edge81a. The depressed 'edges 80a, 81a are closer to the rear edge 70b thanto the front edge 70b of bar 70a. Said bar 70ais also formed withathrough opening 82 between each pair of slots 80, 81 and centrallylocated between edges70b of bar 70a.

Attached to the bar70a ateach level is a catch 85 comprising averticalweb 86 lying against the outer surface of bar 70a. Said web 86 is formedwith a central opening87 registering with opening 82. A nylon pin orcatch fast88 has a shank 88a passing through registering openings 82,87,-and a head 88b contacting the inner face of bar 70a. The shank 88aof the catch fast or pin 88 has a tapered outer endto facilitateinsertion of the shank into said openings 82, 87, and shoulders toengage the outer surface of web 86 of the catch 85, to releasably holdthe catch in place.

Extending from the lower end of web 86 is a bottom wall 90 forming acorner 91 with said web. The forward portion of said corner is cut awayas at 91a to form a narrow portion 90a of wall90 adjacent the rear edge90b of said wall,'and a lower edge 86a at the lower end of web 86 andbeyond the narrow wall 90a. Extending up from theinner end "of bottomwall 90 is an upwardly extendingflange92lprovided with an upper,downwardly and forwardly inclined cam edge 92a. Flange 92 is spaced fromweb 86 and lies in a vertical plane crossing theassociated drawer stopflange 32b (FIG. '2).

Extending from the upper end of web 86 is a narrow horizontal wall 93from which a flange 94 extends up wardly.

In assemblying the catch with the bar, narrow web 93 passes into slot 81and comes down to rest on the depressed edge 8la ofsaid slot. At thesame time narrow portion 90a of wall 90 passes through slot 80 and comesdown to rest on depressed edge 80a. The flange 94 rests against theinner surface of bar 71a.

When the lock is unlocked and projects forwardly, and the lock rod 70has been raised by spring 74, the drawer stop 32 of any shut-drawer isbehind the catch 85 at thatlevel and the horizontal flange 32b of saiddrawer stop is just below the level of wall 90 of the adjacent catch, sothat said drawer can be pulled out or opened without hindrance. i

If the drawer is shut and the lock 56 is pushed-into lockand depress thelock rod 70, theflange 92 of the catch will be lowered so that its rearedge92b will cross the flange 32b and wall 90 of the catch will belocated below said flange 32b. The drawer is now locked and cannot beopened because the forward edge of flange 32b will strike the rear edge92b of cam 92.

If the lockis opened and projected, the lock rod is raised and thedrawer can then be opened. If while the drawer is open, the lock housing56 is pushed-in, the drawer can thereafter be shut and will thenautomatically lock. This is so becausethe lock rod is then in loweredposition, due to engagement of the lower end of the cam edge 65,, (andlower edge of flange 52) with lower the lockrod 70, against the tensionof spring 74,

tobring flange 92 to the lower dot-dash position of FIG. 3. Asthe flange32b passes beyond flange 92, the

lock rod will snap up to its upper dot-dash position of FIG. 3, in whichposition wall 70d of the lock rod will again contact the lower edge offlange 52 of the slider 50. The flange 92 will now again be in front offlange 32b and the drawer is again locked.

It will thus be seen that there is provided a device in which theseveral objects of this invention are achieved and which is well adaptedto meet the conditions of practical use.

As various possible embodiments might be made of the above invention,and as various changes might be made in the embodiment above set forth,it is to be understood that all matter herein set forth or shown in theaccompanying drawings is to be interpreted as illustrative.

, I claim:

l. A drawer file comprising a drawer file cabinet, a key controlled lockcomprising a lock housing, means to support said lock housing in saidcabinet for axial reciprocation, first spring means to project said lockhousing from said cabinet when the lock is unlocked, means to retainsaid lock housing in retracted position when it is pushed-in tonon-projecting position, a slider attached to said lock housing forreciprocal movement therewith, means to mount said slider on saidsupport means for sliding movement together with said lock housing, avertical lock rod in said cabinet, means in said cabinet to support saidlock rod for vertical reciprocation, second spring means interconnectedfrom said lock rod to said cabinet to bias said lock rod upwardly, meanson said slider to move said lock rod downwardly, when said lock housingis being pushed-in from projected to retracted position, and to allowsaid second spring means to bias the lock rod upwardly when the lockhousing is projected upon unlocking said lock, a drawer slidably mountedin said cabinet, and means to lock said drawer against opening when saidlock housing is in retracted condition, and to allow said drawer to beopened whensaid lock housing is in open, projected position, and toautomatically lock said drawer against being pulled open should thedrawer be pushed-in to shut position while the lock housing is inpushed-infretracted position.

2. The combination of claim '1, said supportmeans comprising a plate,means to fix said plate to said cabinet, said plate having a slotslidably receiving part of said slider, said slider having a slotslidably receiving part of said plate.

3. The combination of claim 1, said means on the slider to move saidlock rod downwardly when said lock housing is pushed-in from projectedto retracted position, comprising cooperating cam means on said sliderand lock rod.

4. The combination of claim 1, said plate having a notch, and the upperend of said lock rod slidably engaging in said notch.

5. The combination of claim 1, a drawer stop fixed on said drawer, saidlast means comprising means fixed on said lock rod and disposed in aposition to be clear of said drawer stop and below said door stop, whenthe lock housing is in projected position and said lock rod is in raisedposition under influence of said second spring means, to allow thedrawer to be moved from shut to open position, and said means on saidlock rod, being in the path of said drawer stop and in front thereof,when said lock housing is in retracted condi tion and saidlock rod hasbeen moved down by said cam means, to prevent opening of the drawer, andcooperating cam means on said lock rod and drawer stop to lower saidlock rod when the drawer is moved from open to closed position, whilethe lock housing is in retracted position, to allow the drawer to beclosed, and to allow the lock rod to be raised by said second springmeans when said drawer stop has passed beyond said means on said lockrod, to allow said means on said lock rod to again move into position infront of, and in the path of, said drawer stop, to automatically locksaid drawer against being opened.

6. The combination of claim 5, said support means comprising a plate,means to fix said plate to said cabinet, said plate having a slotslidably receiving part of said slider, said slider having a slotslidably receiving part of said plate.

7. The combination of claim 6, said means on the slider to move saidlock rod downwardly when said lock housing is pushed-in from projectedto retracted position, comprising cooperating cam means on said sliderand lock rod.

8. The combination of claim 1, a draw stop fixed on said drawer, saidlast means comprising a catch fixed on said lock rod having a verticalflange formed with a rear vertical edge, said drawer stop comprising ahorizontal flange having a front edge, said vertical edge of said flangeon said catch being in front of and in the path of said front edge ofsaid drawer stop when the drawer is closed and said lock housing is inretracted condition.

1. A drawer file comprising a drawer file cabinet, a key controlled lockcomprising a lock housing, means to support said lock housing in saidcabinet for axial reciprocation, first spring means to project said lockhousing from said cabinet when the lock is unlocked, means to retainsaid lock housing in retracted position when it is pushed-in tonon-projecting position, a slider attached to said lock housing forreciprocal movement therewith, means to mount said slider on saidsupport means for sliding movement together with said lock housing, avertical lock rod in said cabinet, means in said cabinet to support saidlock rod for vertical reciprocation, second spring means interconnectedfrom said lock rod to said cabinet to bias said lock rod upwardly, meanson said slider to move said lock rod downwardly, when said lock housingis being pushed-in from projected to retracted position, and to allowsaid second spring means to bias the lock rod upwardly when the lockhousing is projected upon unlocking said lock, a drawer slidably mountedin said cabinet, and means to lock said drawer against opening when saidlock housing is in retracted condition, and to allow said drawer to beopened when said lock housing is in open, projected position, and toautomatically lock said drawer against being pulled open should thedrawer be pushed-in to shut position while the lock housing is inpushed-in, retracted position, a drawer stop fixed on said drawer, saidlast means comprising means fixed on said lock rod and disposed in aposition to be clear of said drawer stop and below said door stop, whenthe lock housing is in projected position and said lock rod is in raisedposition under influence of said second spring means, to allow thedrawer to be moved from shut to open position, and said means on saidlock rod, being in the path of said drawer stop and in front thereof,when said lock housing is in retracted condition and said lock rod hasbeen moved down by said cam means, to prevent opening of the drawer, andcooperating cam means on said lock rod and drawer stop to lower saidlock rod when the drawer is moved from open to closed position, whilethe lock housing is in retracted position, to allow the drawer to beclosed, and to allow the lock rod to be raised by said second springmeans when said drawer stop has passed beyond said means on said lockrod, to allow said means on said lock rod to again move into position infront of, and in the path of, said drawer stop, to automatically locksaid drawer against being opened.
 2. A drawer file comprising a drawerfile cabinet, a key controlled lock comprising a lock housing, means tosupport said lock housing in said cabinet for axial reciprocation, firstspring means to project said lock housing from said cabinet when thelock is unlocked, means to retain said lock housing in retractedposition when it is pushed-in to non-projecting position, a sliderattached to said lock housing for reciprocal movement therewith, meansto mount said slider on said support means for sliding movement togetherwith said lock housing, a vertical lock rod in said cabinet, means insaid cabinet to support said lock rod for vertical reciprocation, secondspring means interconnected from said lock rod to said cabinet to biassaid lock rod upwardly, means on said slider to move said lock roddownwardly, when said lock housing is being pushed-in from projected toretracted position, and to allow said second spring means to bias thelock rod upwardly when the lock housing is projected upon unlocking saidlock, a drawer slidably mounted in said cabinet, and means to lock saiddrawer against opening when said lock housing is in retracted condition,and to allow said drawer to be opened when said lock housing is in open,projected position and to automatically lock said drawer against beingpullEd open should the drawer be pushed-in to shut position while thelock housing is in pushed-in, retracted position, a drawer stop fixed onsaid drawer, said last means comprising a catch fixed on said lock rodhaving a vertical flange formed with a rear vertical edge, said drawerstop comprising a horizontal flange having a front edge, said verticaledge of said flange on said catch being in front of and in the path ofsaid front edge of said drawer stop when the drawer is closed and saidlock housing is in retracted condition.
 3. The combination of claim 2,said support means comprising a plate, means to fix said plate to saidcabinet, said plate having a slot slidably receiving part of saidslider, said slider having a slot slidably receiving part of said plate.4. The combination of claim 2, said means on the slider to move saidlock rod downwardly when said lock housing is pushed-in from projectedto retracted position, comprising cooperating cam means on said sliderand lock rod.
 5. The combination of claim 2, said plate having a notch,and the upper end of said lock rod slidably engaging in said notch. 6.The combination of claim 1, said support means comprising a plate, meansto fix said plate to said cabinet, said plate having a slot slidablyreceiving part of said slider, said slider having a slot slidablyreceiving part of said plate.
 7. The combination of claim 6, said meanson the slider to move said lock rod downwardly when said lock housing ispushed-in from projected to retracted position, comprising cooperatingcam means on said slider and lock rod.